If the leaflets have spines on the side, then I definitely agree with it being a Dioon Spinulosum which is a cycad. It seems to begin browning around 30F and will likely die below 25F.
The one in your pic is pretty old, but they are pretty fast growing for a cycad.
Good luck!
-Alex

Thanks so much for your responses. My daughter has tried several palms for her front yard. The last two winters here in Brevard County have been so hard and she's still searching for The Perfect Palm!!